Now lets upgrade some more stuff on the Spartan

[Brushless55]

yep, you could add a second set
I saw these when the prototype photos started coming out
not sure how this could effect things with two sets of trims tabs

[JPriami]

me either. Rumdog mentioned it maybe a bad thing to have them further down towards the strut.

[Brushless55]

I'm sure it will cause the hull to run higher out of the water..

[JPriami]

today I got the speed above 54mph to 55.8 but stability issues still rearing their ugly head. I can ease into the throttle and it goes on plane nicely. if i gun it or if its hitting wakes when getting on plane it excites the chine and keeps doing it.



youtube may remove my audio. they did in my other video

[JPriami]

I'm sure it will cause the hull to run higher out of the water..

probably so.

[Brushless55]

looks good!

[JPriami]

Today was a good day. Found the right setup. 58.9 MPH and stable.

[JPriami]

Made some adjustments. Pulled 58.9 MPH 2 times off the GPS. Boat was running really well. I still have about 5% of an issue with chine walking. But it was dependent on my driving. If I gun it hard it excites the instability when coming on plane and keeps doing the chine. If I come up one plane with a smooth throttle response it just gets up and goes nicely.


link

[Brushless55]

looks good and sounds great Justin

[JPriami]

I added a little bit of lift to the starboard side of the boat. It was an experiment of an idea I had. I planned on using the right trim tab down a little. But looking at the rudder I thought about using it to do it. Sound weird? I kicked the rudder very slightly forward, I had been running it just a little kicked back. because I visualized it being more level when the boat is on plane and slightly nose up. Now I think the very bottom of the rudder is acting like a trim tab under the water and giving the starboard side a little lift the way it is kicked forward a hair when the boats on on plane. Its working because I was able to move the batteries further back and it was still being stable with out chine like all the other times ive tried it. But it still seems to be better with the packs about 3" back from all the way forward. I didnt seem to gain much when I moved them back on one of the test today. I think the same can be done with the starboard (right) trim tab. And I may try it as well.

[bigcam406]

great job!

[dag-nabit]

JP,

How did you mount your 180 Amp ESC.

It looks like you have it sitting on the top rail of the tray, what do you use to support/secure it in place.

Thanks
Kevin

[JPriami]

I had used rubber. I had left over from a car restoration project. I cut it to match the shape of the esc. Had to cut two pieces to get the right height. Used 3m heavy duty trim adhesive to glue the two together. Then used 3m body molding stick tape to mount it to the tray and esc. It's pretty hard to get off. Even when it was submerged the time I buoyed it.

[dag-nabit]

That is similar to what I was thinking.

I was going to try and find some lexan/plexiglass type material about 1/4" thick to cut to size and then epoxy or screw it to the bottom of the tray. Then use some thicker foam type (vibration isolating) double sided mounting pads, or velcro strips, to mount the ESC to the pad. It looks like I need to lift it just under 3/8".

I'm not sure how well epoxy will hold on the plastic tray. It has a lot of flex.

Kevin

[JPriami]

Try that 3M double sticky tape for automotive moldings. Works great.